JP2017023907A - Coating fiber structure and paint roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating fiber structure and a paint roller, easy in expansive painting, and capable of continuing coating of paint by comparatively small force, by restraining the deterioration in spitting-out performance of the paint.SOLUTION: The present invention provides a coating fiber structure 11 having coating fiber 13 provided on a coating surface of paint and a paint roller having the coating fiber structure 11. A branch-shaped part composed of a fluorine-based resin having water-repellency/oil-repellency and a particulate are respectively dispersively arranged on a surface of the coating fiber 13. The branch-shaped part composed of the fluorine-based resin having the water-repellency/oil-repellency is preferably PTFE of 4-12 pieces in the carbon number. The particulate can use at least any one of colloidal silica and a PTFE particulate.SELECTED DRAWING: Figure 1

Description

The present invention relates to a coating fiber structure and a paint roller.

According to Patent Document 1, it is possible to apply a water- and oil-repellent fluorine-based resin having a branch portion made of PTFE (ethylene tetrafluoride) by spraying on a coating fiber of a paint roller. Proposed. An object of the invention according to Patent Document 1 is to improve the paint discharging property and to achieve good paint application with a small force.

However, when the present inventor made additional trials, in the invention according to Patent Document 1, although the paint dischargeability initially showed a good result, the paint dischargeability deteriorated as the number of coatings increased, and the paint was applied. It became heavy and it was confirmed that the operator's power required for application | coating will become large.

US Pat. No. 7,258,925

An object of the present invention is to provide a coating fiber structure and a paint roller that can suppress the deterioration of the discharge property of the paint, can be easily spread, and can continue to apply the paint with a relatively small force.

The present invention is a coating fiber structure having paint coating fibers on the surface, the surface of the coating fibers on the surface of the coating fibers, such as Patent Document 1 and conventionally used water- and oil-repellent branch portions, The above-mentioned problems are solved by providing a coating fiber structure characterized in that fine particles are dispersed and arranged, and the fine particles are at least one of colloidal silica and PTFE fine particles. . Moreover, this invention provides the paint roller attached to the roll for coating by using the said fiber structure for coating as the surface for coating.

The branch part is suitably a branch part made of PTFE having 4 to 12 carbon atoms. The branch-like portion is coated on the coating fiber as a water / oil repellent resin compound containing acrylate. As a result, a structure is formed in which branch portions are dispersed and arranged on the surface of the coating fiber using the acrylate as a binder.

The water / oil repellent resin compound suppresses the deterioration of the discharge property of the paint by the branch portion made of PTFE. However, in the processing using only the water / oil repellent resin compound, it is inevitable that the water repellency is lowered as the number of coatings is increased due to the characteristics of the resin structure. Therefore, by using together specific fine particles (at least one of colloidal silica and PTFE fine particles) having an effect of preventing adhesion of other substances to the fiber surface, different actions of both mechanisms are synergistically exhibited. The present invention has been completed by discovering that good paint dischargeability can be realized.

In the present invention, the blending of at least one of colloidal silica and PTFE fine particles in addition to the water / oil repellent resin compound suppresses the deterioration of the discharge property of the paint. It is possible to provide a coating fiber structure and a paint roller capable of continuously realizing various painting operations.

It is a disassembled perspective view of the paint roller which concerns on embodiment of this invention. It is structure explanatory drawing of the fiber structure for coating which concerns on embodiment of this invention. It is a photograph of the corrugated cardboard board after painting concerning Example 15 and comparative example 1.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(About paint roller)
FIG. 1 is an exploded perspective view of a paint roller according to an embodiment of the present invention. This paint roller is for a painting roll 1 and a painting roller for rotatably supporting the painting roll 1. A support shaft 6 and a bearing member are provided. The support shaft 6 is made of a material having rigidity such as a metal, and a handle 5 is provided on the base end side of the support shaft 6. A bearing member is attached to the distal end side of the support shaft 6. This bearing member is composed of two divided cylinder members 2 and 3 and a fixed body 4 incorporated therein. The cylindrical members 2 and 3 are fixed inside the coating roll 1 in a state in which the fixed body 4 is rotatably included. The fixed body 4 is fixed to the support shaft 1 by inserting the support shaft 1 therein. As a result, the coating roll 1 is rotatably supported on the support shaft 6, and the coating roll 1 including the coating rotates on the application surface, whereby the coating is applied to the application surface. The coating roll 1 includes a cylindrical support 10 having a relatively high rigidity, such as a hard synthetic resin, and a coating fiber structure 11 fixed to the support 10 by heat fusion or an adhesive. It is configured.

(About fiber structure for painting)
Next, the coating fiber structure 11 will be described in more detail.
This coating fiber structure 11 constitutes the coating surface of the paint roller, and has pile-like coating fibers 13 on one side of the ground texture 12 as shown in an enlarged view in FIG. In addition, although it was set as the woven fabric in the example of FIG. 2, it can implement also with a knitted fabric. The coating fiber 13 includes a number of cut piles. The pile yarn 14 constituting the cut pile includes thermoplastic synthetic fibers such as polyester, polyamide, polypropylene, acrylic polymer, polyvinyl alcohol, and polyvinylidene chloride, semi-synthetic fibers such as viscose and rayon, cotton, wool Various materials such as natural fibers such as silk can be used.

The coating fiber structure 11 of the present invention may be manufactured by any method, but an example of the manufacturing method is shown. The coating fiber structure 11 supplies a pile yarn 14 when manufacturing a fabric such as a single circular knitted fabric, a double raschel knitted fabric, a multiple woven fabric, or a laminated nonwoven fabric using a knitting and weaving machine, a nonwoven fabric manufacturing apparatus, or the like. Then, a loop pile fabric is manufactured, and the obtained loop pile fabric is subjected to a shearing machine, and the loop pile is cut by a conventional method to form a cut pile. Thereby, the fiber structure 11 for coating which has the fiber 13 for coating which contains the pile yarn 14 in the ratio of 25-100 mass% is manufactured. If necessary, the fiber can be defibrated using a known defibrating machine, a hair splitting machine, a raising apparatus or the like. This defibrating is preferably performed at 20% or more of the total height of the cut pile, but it is not necessary to perform the defibrating process at all, and can be carried out by appropriately changing according to the application conditions and the like.
The coating fiber structure 11 according to the present invention can be used in various forms of coating members, and can be applied not only to the paint roller of FIG. 1 but also to a coating brush.

(About coating)
The coating fiber structure 11 having the coating fibers 13 is coated with a coating agent.
This coating may be performed at the stage of yarn before weaving or knitting the coating fiber structure 11 or may be performed during or after the process of weaving or knitting the coating fiber structure 11. Alternatively, the coating fiber structure 11 may be disposed after the coating fiber structure 11 is disposed on the support 10, and in any case, the coating fiber provided on the coating surface of the coating fiber structure 11 of the paint roller at the time of completion is coated. As long as it is given.

The coating method is not particularly limited, such as spray coating method, roll coating method, dip coating method, various printing methods such as screens, etc., but when dip coating method is used, the coating method There is an advantage that the entire fiber 13 can be easily coated. The coating may be performed once or a plurality of times.

In addition to the conventional water / oil repellent resin compound, the coating imparts fine particles to the surface of the coating fiber structure 11.
The fine particles include at least one of colloidal silica and PTFE fine particles.

(Water / oil repellent resin compound)
The water / oil repellent resin compound has a branch portion made of a fluorine-based resin having water / oil repellency, such as a generally known PTFE compound for water repellency processing of fibers and a tetrafluoride resin for reducing the friction coefficient. Those can be appropriately selected and used. This branch portion is preferably a branch portion made of PTFE having 4 to 12 carbon atoms. This water / oil repellent resin compound contains the branch part and a resin component such as acrylate serving as a binder for the coating fiber 13, and when the coating is completed, the branch part is formed of the coating fiber 13 by the binder. The structure given dispersed on the surface is shown. The resin component serving as the binder may completely cover the entire surface of the coating fiber 13, but it indicates that it is a partially attached form, It is preferable in relation.

(Fine particles)
At least one of colloidal silica and PTFE fine particles is dispersed and arranged on the surface of the coating fiber 13 as fine particles.
Colloidal silica is a colloid of silicon oxide or a hydrate thereof, and those having a particle size of about 5 to 300 nm can be suitably used. In addition, since it is considered that the contact angle of water depends on the particle diameter of colloidal silica, it is preferable to select a particle having a small particle diameter, but the particle diameter is set in consideration of the relationship between cost and obtained performance. be able to.
The PTFE fine particles are resin fine particles composed of PTFE telomer or the like. More specifically, it is composed of a telomer (low molecular weight polymer) having a molecular weight of 1000 to 100,000 and a polymer, and the particle shape is not particularly limited, but those that are irregular fine flat pieces such as scales are preferred. Can be used. The PTFE fine particles are generally used for imparting lubricity and releasability of plastics and metals, but when used in combination with a water- and oil-repellent resin compound, good paint discharge properties are maintained. It has been found that the paint workability can be improved.

The fine particles are applied to the coating fiber 13 in the same process as the water / oil repellent resin compound or in a separate process, and are dispersed and arranged on the surface thereof. The fine particles may take the form of being disposed on the surface of the binder of the water / oil repellent resin compound, or the form of being disposed on the surface of the coating fiber 13 where no binder is present. Alternatively, both forms may be mixed. When the step of applying the fine particles and the step of applying the water / oil repellent resin compound are performed in separate steps, either step may be performed first. Colloidal silica and PTFE fine particles can be used in combination.
These fine particles cooperate with the water / oil repellent resin compound to suppress the deterioration of the paint discharge. In particular, processing with only the water / oil repellent resin compound inevitably caused a decrease in the water repellency as the number of coatings increased due to the characteristics of the resin structure. It is considered that by blending colloidal silica and PTFE fine particles having an effect of preventing water, water repellent action different in both mechanisms was exhibited synergistically, and good paint dischargeability could be maintained.

(Other compounds)
In addition to the water / oil repellent resin compound and the fine particles, various components such as other resin components and water and organic solvents can be blended in the coating agent as long as the performance is not significantly impaired.

(Combination of water and oil repellent resin compound and fine particles)
The use ratio of the water / oil repellent resin compound and the fine particles can be changed as appropriate, but it is preferable that the synergistic effect of both can be effectively exhibited. The ratio of resin compound to fine particles used (solid content mass ratio) is in the range of 98.4: 1.6 to 20.0: 80.0, more preferably 95.0: 5.0 to 26.7: 73. Both are used so as to be in the range of 91.0: 9.0 to 50.0: 50.0, most preferably in the range of .3. When both are coated in the same process, the blending amount in the coating agent may be carried out as the above ratio, but also when disposed in the coating fiber 13 in a separate process, the solid content mass ratio of both disposed Is preferably the above ratio.

(Examples 1-18 and Comparative Examples 1-3)
Coating fiber structure: A pile fabric made of a blended yarn of polyester and polyamide synthetic fiber having a paint roller hair length of 25 mm was used as a coating fiber structure, and this was processed in the examples and comparative examples.

Coating agent formulation: Coating agent according to the formulation of each example and comparative example shown in Table 1 is coated on the coating fiber structure by roll coating method, and the coating fiber structure is wound around the support and fixed. A paint roller was created. In Examples 1 to 18, a mixture of a water / oil repellent resin compound (having a central carbon number of 6 branches of PTFE) generally used for water repellency and oil repellency processing of textile products and colloidal silica is mixed with water. In the mixed solvent with the organic solvent, the compounding agent in the solid content ratio shown in Table 1 is used as the coating agent. In Comparative Example 1, the coating is not applied. In Comparative Example 2, only the PTFE resin is used. A coating agent was obtained.

(Test method)
As a confirmation test of the workability of application, two types of tests were conducted for each example and comparative example using the following paints.
Paint: Water-based 1-component urethane resin Paint diluent: Water dilution rate: 10%

Workability (1) test
A cardboard board of 500 mm × 500 mm was placed horizontally and painted according to a conventional method. The workers were A and B, and the resistance during coating (mainly the degree of force required during the coating operation) was confirmed by a five-step evaluation. The evaluation results are shown in Table 1 with the result that the resistance decreases in the order of x → Δ → ○ → ◎ → ◎◎.

Workability (2) test
A 1500 mm × 1500 mm cardboard board was placed vertically and painted according to a conventional method. The number of workers was one, and it was applied with as little force as possible. The results (number of rows that could be painted) are shown in Table 1, and FIG. 3 shows photographs of the corrugated cardboard plates according to Example 15 and Comparative Example 1.

(Test results)
In all the examples, it was revealed that the workability was improved as compared with Comparative Example 1 (no coating agent) and Comparative Example 3 (only colloidal silica).
In Examples 4-18, it became clear that workability | operativity improved rather than the comparative example 2 (only the water-oil-repellent resin compound (6 central carbon number of the branch part of PTFE)). In 12-18 (especially Examples 14-17), it became clear that workability | operativity improved very much. Therefore, in the present invention, workability is improved as compared with the case where these are coated alone due to the synergistic effect of the water- and oil-repellent resin compound (the central carbon number of PTFE branch 6) and colloidal silica. It has become clear that can provide a means to significantly improve.

(Other examples)
Next, a water / oil repellent resin compound generally used for water and oil repellency processing of textile products (core carbon number of PTFE branch portion of 8) and colloidal silica is 86.8: Example 19 was prepared by blending in a mixed solvent of water and organic solvent in 13.2.
In addition, after the first coating with a coating agent in which PTFE fine particles, which are commonly used for plastic and metal lubrication and releasability, are mixed in an organic solvent, the water and oil repellency of textile products A second coating was applied with a coating agent in which a water- and oil-repellent resin compound generally used for processing (the central carbon number of PTFE branches of 6) was mixed in a mixed solvent of water and an organic solvent. Example 20 was made. Even in Example 20, the solid content ratio between the water- and oil-repellent resin compound coated the second time and the PTFE fine particles coated the first time was adjusted to 86.8: 13.2.
Table 2 shows the results of tests of workability (1) and (2) using Examples 19 and 20.
As is apparent from Table 2, the water repellency and friction coefficient are reduced by using colloidal silica or PTFE fine particles in combination, regardless of the difference in the central carbon number of the PTFE branch in the water / oil repellent resin compound. It has been confirmed that the action to be improved can be improved. Moreover, it was confirmed that the effect equivalent to colloidal silica is exhibited with PTFE fine particles.

DESCRIPTION OF SYMBOLS 1 Coating roll 11 Coating fiber structure 12 Ground structure 13 Coating fiber

Claims (5)

In the fiber structure for painting having the fiber for painting on the surface,
On the surface of the coating fiber, branch portions made of a fluorine-based resin having water and oil repellency and fine particles are dispersed and arranged, respectively.
The coating fiber structure, wherein the fine particles are at least one of colloidal silica and PTFE fine particles. 2. The coating fiber structure according to claim 1, wherein the branch portion is a branch portion made of PTFE having 4 to 12 carbon atoms. The coating fiber according to claim 1 or 2, wherein the water- and oil-repellent resin compound containing the branch portion and acrylate has a structure provided on the surface of the coating fiber using the acrylate as a binder. Structure. The solid content mass ratio of the water / oil repellent resin compound and the fine particles is 98.5: 1.5 to 20.0: 80.0. Fiber structure for painting. A paint roller, wherein the coating fiber structure according to any one of claims 1 to 4 is attached to a coating roll as a coating surface.